@@ -166,9 +166,7 @@ enum {
NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */
NFS_STATE_MAY_NOTIFY_LOCK, /* server may CB_NOTIFY_LOCK */
NFS_STATE_CHANGE_WAIT, /* A state changing operation is outstanding */
-#ifdef CONFIG_NFS_V4_2
NFS_CLNT_DST_SSC_COPY_STATE, /* dst server open state on client*/
-#endif /* CONFIG_NFS_V4_2 */
};
struct nfs4_state {
@@ -1594,6 +1594,7 @@ static int __nfs4_reclaim_open_state(struct nfs4_state_owner *sp, struct nfs4_st
if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) {
spin_lock(&state->state_lock);
list_for_each_entry(lock, &state->lock_states, ls_locks) {
+ trace_nfs4_state_lock_reclaim(state, lock);
if (!test_bit(NFS_LOCK_INITIALIZED, &lock->ls_flags))
pr_warn_ratelimited("NFS: %s: Lock reclaim failed!\n", __func__);
}
@@ -1057,6 +1057,84 @@
)
);
+TRACE_DEFINE_ENUM(LK_STATE_IN_USE);
+TRACE_DEFINE_ENUM(NFS_DELEGATED_STATE);
+TRACE_DEFINE_ENUM(NFS_OPEN_STATE);
+TRACE_DEFINE_ENUM(NFS_O_RDONLY_STATE);
+TRACE_DEFINE_ENUM(NFS_O_WRONLY_STATE);
+TRACE_DEFINE_ENUM(NFS_O_RDWR_STATE);
+TRACE_DEFINE_ENUM(NFS_STATE_RECLAIM_REBOOT);
+TRACE_DEFINE_ENUM(NFS_STATE_RECLAIM_NOGRACE);
+TRACE_DEFINE_ENUM(NFS_STATE_POSIX_LOCKS);
+TRACE_DEFINE_ENUM(NFS_STATE_RECOVERY_FAILED);
+TRACE_DEFINE_ENUM(NFS_STATE_MAY_NOTIFY_LOCK);
+TRACE_DEFINE_ENUM(NFS_STATE_CHANGE_WAIT);
+TRACE_DEFINE_ENUM(NFS_CLNT_DST_SSC_COPY_STATE);
+
+#define show_nfs4_state_flags(flags) \
+ __print_flags(flags, "|", \
+ { LK_STATE_IN_USE, "IN_USE" }, \
+ { NFS_DELEGATED_STATE, "DELEGATED" }, \
+ { NFS_OPEN_STATE, "OPEN" }, \
+ { NFS_O_RDONLY_STATE, "O_RDONLY" }, \
+ { NFS_O_WRONLY_STATE, "O_WRONLY" }, \
+ { NFS_O_RDWR_STATE, "O_RDWR" }, \
+ { NFS_STATE_RECLAIM_REBOOT, "RECLAIM_REBOOT" }, \
+ { NFS_STATE_RECLAIM_NOGRACE, "RECLAIM_NOGRACE" }, \
+ { NFS_STATE_POSIX_LOCKS, "POSIX_LOCKS" }, \
+ { NFS_STATE_RECOVERY_FAILED, "RECOVERY_FAILED" }, \
+ { NFS_STATE_MAY_NOTIFY_LOCK, "MAY_NOTIFY_LOCK" }, \
+ { NFS_STATE_CHANGE_WAIT, "CHANGE_WAIT" }, \
+ { NFS_CLNT_DST_SSC_COPY_STATE, "CLNT_DST_SSC_COPY" })
+
+#define show_nfs4_lock_flags(flags) \
+ __print_flags(flags, "|", \
+ { BIT(NFS_LOCK_INITIALIZED), "INITIALIZED" }, \
+ { BIT(NFS_LOCK_LOST), "LOST" })
+
+TRACE_EVENT(nfs4_state_lock_reclaim,
+ TP_PROTO(
+ const struct nfs4_state *state,
+ const struct nfs4_lock_state *lock
+ ),
+
+ TP_ARGS(state, lock),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(u32, fhandle)
+ __field(u64, fileid)
+ __field(unsigned long, state_flags)
+ __field(unsigned long, lock_flags)
+ __field(int, stateid_seq)
+ __field(u32, stateid_hash)
+ ),
+
+ TP_fast_assign(
+ const struct inode *inode = state->inode;
+
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->fileid = NFS_FILEID(inode);
+ __entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
+ __entry->state_flags = state->flags;
+ __entry->lock_flags = lock->ls_flags;
+ __entry->stateid_seq =
+ be32_to_cpu(state->stateid.seqid);
+ __entry->stateid_hash =
+ nfs_stateid_hash(&state->stateid);
+ ),
+
+ TP_printk(
+ "fileid=%02x:%02x:%llu fhandle=0x%08x "
+ "stateid=%d:0x%08x state_flags=%s lock_flags=%s",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long long)__entry->fileid, __entry->fhandle,
+ __entry->stateid_seq, __entry->stateid_hash,
+ show_nfs4_state_flags(__entry->state_flags),
+ show_nfs4_lock_flags(__entry->lock_flags)
+ )
+)
+
DECLARE_EVENT_CLASS(nfs4_set_delegation_event,
TP_PROTO(
const struct inode *inode,
One of the most frustrating messages our sustaining team sees is the "Lock reclaim failed!" message. Add some observability in the client's lock reclaim logic so we can capture better data the first time a problem occurs. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> --- fs/nfs/nfs4_fs.h | 2 - fs/nfs/nfs4state.c | 1 + fs/nfs/nfs4trace.h | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 79 insertions(+), 2 deletions(-)